Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FZUS51 KBOX 191414
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1014 AM EDT Sun Aug 19 2018

Coastal waters from the Merrimack River MA to Watch Hill RI out to
25 NM

ANZ200-200315-
1014 AM EDT Sun Aug 19 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A front will remain stalled south of New England through tonight.
Weak waves of low pres will move along it, bringing scattered
showers and patchy fog, especially across the southern waters.
Gusty NE winds up to around 25 kt through tonight. High pres will
build across the waters late tonight and Tue. Low pres with its
associated fronts will approach on Wed, then push offshore Wed
night. Dry high pres will build in from the W on Thu.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-200315-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas around 5 ft. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.THU...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.THU NIGHT...W winds around 5 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-200315-
Massachusetts Bay and Ipswich Bay-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.MON...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 2 to 4 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog.
Vsby 1 to 3 NM.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM.
.WED...S winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Showers likely.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...W winds around 5 kt. Seas 1 foot or less.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-200315-
Cape Cod Bay-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE...E winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...W winds around 5 kt. Seas 1 foot or less.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-200315-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 4 to 5 ft. A chance of showers this morning.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.
.TUE...E winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. A chance of showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.THU...NW winds 5 to 10 kt. Seas 3 to 5 ft.
.THU NIGHT...W winds around 5 kt. Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-200315-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft. A chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.
.TUE...NE winds around 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. A chance of showers.
.WED...S winds 15 to 20 kt. Seas 4 to 7 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft.
.THU...NW winds 5 to 10 kt. Seas 3 to 5 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-200315-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 30 kt.
Seas 4 to 6 ft. A chance of showers this morning.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft.
.TUE...E winds around 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
.WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
7 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft.
.THU...NW winds 5 to 10 kt. Seas 3 to 5 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-200315-
Nantucket Sound-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. A chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.TUE...E winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...NW winds around 5 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-200315-
Vineyard Sound-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft.
.TUE...E winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-200315-
Buzzards Bay-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 30 kt.
Seas 2 to 4 ft. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.MON NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 1 foot or less.
.TUE...E winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.WED NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-200315-
Rhode Island Sound-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft. A slight chance of showers.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft.
.MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers.
.WED...SW winds 15 to 20 kt. Seas 3 to 5 ft. Showers likely.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-200315-
Block Island Sound-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.MON NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely.
.WED NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-200315-
Boston Harbor-
1014 AM EDT Sun Aug 19 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft.
.TONIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 2 to 3 ft.
.MON...NE winds 5 to 10 kt. Waves around 2 ft.
.MON NIGHT...NE winds around 5 kt. Waves 1 foot or less. Patchy
fog. Vsby 1 to 3 NM.
.TUE...E winds around 5 kt. Waves 1 foot or less. Patchy fog.
Vsby 1 to 3 NM.
.TUE NIGHT...SE winds around 5 kt. Waves 1 foot or less. Patchy
fog. A chance of showers. Vsby 1 to 3 NM.
.WED...S winds 5 to 10 kt. Waves 1 foot or less. Showers likely.
.WED NIGHT...W winds 5 to 10 kt. Waves 1 foot or less.
.THU...NW winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...NW winds around 5 kt. Waves 1 foot or less.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-200315-
Narragansett Bay-
1014 AM EDT Sun Aug 19 2018

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft. A slight chance of showers.
.TONIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 2 to 3 ft.
.MON...NE winds 5 to 10 kt. Waves around 2 ft.
.MON NIGHT...NE winds 5 to 10 kt. Waves around 2 ft.
.TUE...E winds 5 to 10 kt. Waves around 2 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
4 ft. Showers likely.
.WED NIGHT...W winds 5 to 10 kt. Waves 2 to 4 ft.
.THU...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds around 5 kt. Waves 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

For the latest updates, please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.